<div class="container">
  <h1>Hello World</h1>
  <img src="https://www.freeimageslive.co.uk/files/images009/notes_noticeboard.preview.jpg" alt="blank notes pinned on a board">
  image by <a href="http://www.freeimageslive.co.uk/free_stock_image/notes-noticeboard-jpg" target="_blank"> freeimageslive.co.uk - freebie.photography</a>
</div>

body {
  margin: 0;
  padding: 0;
}

h1 {
  font-size: 3rem;
}

.container {
  margin: 0 auto;
  border: 5px solid red;
  width: 200%;
}

img {
  width: 100%;
  /*   max-width: 100%; */
}